class B{
    int x = 100,y = 200;
    public void setX(int x){
	x = x;
    }
    public void setY(int y){
	this.y = y;
    }
    public int getXYSum(){
	return x+y;
    }
}
public class A2{
    public static void main(String a[]){
	B b = new B();
	b.setX(-100);
	b.setY(-200);
	System.out.println("sum="+b.getXYSum);
    }
}